The nano TiO2 dispersion suspension emulsion was prepared by using sodium hexametaphosphate as dispersing agent.The polyester knitted fabric was impregnated in the emulsion so that TiO2 was loaded onto the fabric and the nano TiO2 was then fixed on the fabric by hot pressing.The surface morphology,element distribution,UV shielding performance and water washing resistance of the fabric before and after finishing were characterized by scanning electron microscope,energy spectrum analysis and UV protection performance.The results show that the nano-TiO2 particles are successfully evenly dispersed and loaded on the fabric,the UPF value of the fabric is increased from 57.43 to 229.14,and the UV resistance is significantly improved.After 10 times of washing,the UPF value of the fabric remains above 200.00,and the mechanical properties,whiteness,air permeability and handle of the fabric do not change significantly.
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